Hardware Configuration File

Because SCSI devices are not self-identifying, a hardware configuration file is required for a
target driver. See the driver.conf(4) and scsi_free_consistent_buf(9F) man pages for details. The following
is a typical configuration file:

name="xx" class="scsi" target=2 lun=0;

The system reads the file during autoconfiguration. The system uses the class property
to identify the driver's possible parent. Then, the system attempts to attach the
driver to any parent driver that is of class scsi. All host bus
adapter drivers are of this class. Using the class property rather than the parent
property is preferred. This approach enables any host bus adapter driver that finds
the expected device at the specified target and lun IDs to attach to the
target. The target driver is responsible for verifying the class in its probe(9E)
routine.